Zootaxa 2522: 1–43 (2010) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2010 · Magnolia Press ISSN 1175-5334 (online edition) A revision of the genus Zatypota Förster of Japan, with descriptions of nine new species and notes on their hosts (Hymenoptera: Ichneumonidae: Pimplinae) RIKIO MATSUMOTO1 & KEIZO TAKASUKA2 1Osaka Museum of Natural History. Nagai Park 1-23, Higashisumiyoshi-ku, Osaka, Japan. E-mail: [email protected] 2Entomological Laboratory, Faculty of Agriculture, Ehime University. Tarumi 3-5-7, Matsuyama, Japan. E-mail: [email protected] Table of contents Abstract ............................................................................................................................................................................... 1 Introduction ......................................................................................................................................................................... 2 Material and methods .......................................................................................................................................................... 2 Zatypota Förster .................................................................................................................................................................. 2 Key to Japanese species of Zatypota ................................................................................................................................... 3 Zatypota albicoxa (Walker) ......................................................................................................................................... 5 Zatypota baragi Matsumoto, sp. nov. ....................................................................................................................... 10 Zatypota brachycera Matsumoto, sp. nov. ................................................................................................................ 14 Zatypota chryssophaga Matsumoto, sp. nov. ........................................................................................................... 16 Zatypota dendrobia Matsumoto, sp. nov. ................................................................................................................. 18 Zatypota elegans Matsumoto, sp. nov. ..................................................................................................................... 22 Zatypota grachilipes Uchida & Momoi..................................................................................................................... 26 Zatypota maculata Matsumoto & Takasuka, sp. nov. .............................................................................................. 28 Zatypota percontatoria (Müller) ................................................................................................................................ 33 Zatypota sulcata Matsumoto, sp. nov. ...................................................................................................................... 35 Zatypota takayu Matsumoto & Takasuka, sp. nov. .................................................................................................. 37 Zatypota yambar Matsumoto, sp. nov. ..................................................................................................................... 38 Discussion ......................................................................................................................................................................... 40 References.......................................................................................................................................................................... 42 Abstract Japanese species of the genus Zatypota are revised and a total of twelve species are recognized. Nine of them, Z. baragi sp. nov., Z. brachycera sp. nov., Z. chryssophaga sp. nov., Z. dendrobia sp. nov., Z. elegans sp. nov., Z. maculata sp. nov., Z. sulcata sp. nov., Z. takayu sp. nov. and Z. yambar sp. nov., are new to science and one, Z. percontatoria, is newly recorded from Japan. Host records are given for ten species including seven new and one newly recorded species based on reared materials. Each species utilizes different spider species as hosts. All host spiders belong to Theridiidae (nine species) and Linyphiidae (Z. sulcata). A key to Japanese species is provided and notes on their biology are given. Key words: parasitoid, koinobiont, Ephialtini, host, Theridiidae, immature stages, key, parasitism Accepted by A. Aguiar: 29 May 2010; published: 30 Jun. 2010 1.